How to include a readme reference is not clear

[lyndaidaii]

Impact

confuse customers

Describe the bug

On the upload page, there is warning message about missing readme. the refence link "how to include a readme" is not insufficient. it doesn't point to how to include a readme.
it links to this page now. https://learn.microsoft.com/en-us/nuget/create-packages/package-authoring-best-practices#readme

Repro Steps

1. go to nuget.org upload page
2. upload a package without embedded readme
3. see warning message, click link.

Expected Behavior

Links to actually documentation how to include a readme

Screenshots

No response

Additional Context and logs

No response

[lyndaidaii]

it was related to this issue: https://github.com/NuGet/docs.microsoft.com-nuget/issues/2944.
Let's redirect to aka.ms/nuget-inlcude-readme for now, redirect back once doc is fixed.